The British have already abolished the monarchical tyranny we fought a revolution against. They can call themselves a Constitutional Monarchy, but the truth is they are a parliamentary democracy and that is a good thing.

It was a Parliamentary Democracy that you rebelled against. But if you grovelled, I reckon we'd have you back.

I'm fully for a unification of Canada and the United States. It would lead to an increase in total GDP by about 10% and keep the USD$ as the world reserve currency for the foreseeable future. I, and many Americans I know already see the Canadians as almost a part of our country already (often unflateringly referred to as "America's hat").

The real sticking point would be their form of government and laws. I don't like how their government is set up, and I'm guessing they probably wouldn't want ours. Further, gun control would probably be a big sticking point.

I read somewhere that if North Korea and South Korea unite, aside from all the political and mindset differences, it would make Korea an extremely powerful player in the world market. Apparently cheap labour from the North could further increase the production in the richer south. Obviously there's the problem that in North Korea they seem to live in the closest you can get to George Orwell's 1984 and the infrastructure would need a drastic overhaul, but do you think that all the people would benefit?

What other countries would benefit from unification?

i am gonna go out on a limb and guess that north korea somehow has okay infrastructure. i mean most ex-socialist countries had really good infrastructure (except good roads/highways).
if north and south korea unites it will be much more beneficial to south korean companies: cheap labour. it's still gonna be better for northerners than this current situation though (at least no starvation).